Absolutely, you mentioned bug 1726160 in an earlier comment and it contained a functioning workaround - removing iio-sensor-proxy. The problem seems to originate from systemd mount matrix issues on HP laptops using the lis3lv02d accelerometer, however determining the status of the github issue (and whether it applies to me) is beyond my skills.
https://github.com/systemd/systemd/issues/5160 https://github.com/systemd/systemd/commit/0d1a2be93e16aa03026f1c36e81951097e8dad2c ** Bug watch added: github.com/systemd/systemd/issues #5160 https://github.com/systemd/systemd/issues/5160 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1821641 Title: [HP Elitebook 840 G1] Screen is upside down on 19.04 daily Status in linux package in Ubuntu: Confirmed Bug description: On the 19.04 daily image (2019-03-24), the screen on my laptop is completely upside down, from the moment the GUI loads. This does not happen on 18.04 and 18.10. It appears to be an accelerometer issue since holding the laptop upside down flips the image to its correct orientation - basically the functionality of the accelerometer is suddenly inverted. Please contact me if you want me to help testing the issue on my hardware. Thanks! --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu23 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sharper 1380 F.... pulseaudio /dev/snd/controlC1: sharper 1380 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 19.04 InstallationDate: Installed on 2019-03-30 (6 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190330) MachineType: Hewlett-Packard HP EliteBook 840 G1 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=sv_SE.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-8-generic root=UUID=1e4bdc5f-0616-42f3-8da2-4ec27df3fc55 ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1 RelatedPackageVersions: linux-restricted-modules-5.0.0-8-generic N/A linux-backports-modules-5.0.0-8-generic N/A linux-firmware 1.178 Tags: disco Uname: Linux 5.0.0-8-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 04/12/2018 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: L71 Ver. 01.44 dmi.board.name: 198F dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 15.59 dmi.chassis.asset.tag: 5CG4430MGN dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrL71Ver.01.44:bd04/12/2018:svnHewlett-Packard:pnHPEliteBook840G1:pvrA3009DD10203:rvnHewlett-Packard:rn198F:rvrKBCVersion15.59:cvnHewlett-Packard:ct10:cvr: dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI dmi.product.name: HP EliteBook 840 G1 dmi.product.sku: D1F44AV dmi.product.version: A3009DD10203 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821641/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp